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Capsule of the Day

DebunkedThe PolygraphThe instrument popularly called a lie detector, which records breathing, blood pressure, pulse and skin conductance dur…

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The library

Capsules

1,028 capsules, each one classified by the strength of its evidence.

All1,028Fact599Proven130Theory89Hypothesis71Contested90Debunked48
geography236biology88physics67history54medicine45astronomy33psychology26mathematics26chemistry20engineering20astrophysics19neuroscience19anthropology18art18
Filtered bymathematicscomputingClear all

Results

Showing 1 to 5 of 5

NewestMost votedA to Z
mathematics
Proven

The Four Colour Theorem

Four colours suffice to colour any map so that no two regions sharing a border have the same colour. It was conjectured in 1852, resisted proof for…

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mathematics
Proven

The Fourier Transform

Any signal can be decomposed into a sum of pure sine waves of different frequencies. The claim was disbelieved when made, it is one of the most…

byCapsule0 votes0 reviews
mathematics
Fact· Historical

Alan Turing

Alan Turing (1912 to 1954) was a British mathematician and logician widely regarded as the father of computer science and artificial intelligence.…

byCapsule0 votes0 reviews
mathematics
Fact· Historical

Ada Lovelace

Ada Lovelace (1815 to 1852) was an English mathematician often celebrated as the first computer programmer. Working with Charles Babbage's designs…

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mathematics
Theory

The Theory of Computation

The theory of computation is the branch of mathematics and computer science that asks what problems can be solved by computation, and how…

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